Get an overview of histamine including its biological role effects on the body and involvement in allergies and immune responses. Overview of Histamine: Chemical Nature: Histamine is an amine compound (hist + amine) released by tissues during allergic and inflammatory reactions, as well as in response to injury. Function: Acts as a local response against … Read more
Filling and Sealing of Ampoules, Vials, and Infusion Fluids ensure sterility and accurate dosing by using automated systems under aseptic conditions. Filling and Sealing of Ampoules are critical for patient safety and product stability. Ampoules: Washing and Sterilization Ampoules are washed (automatically or manually), depyrogenated (typically by dry heat in a depyrogenation tunnel), and transferred to … Read more
Formulation Requirements for Pellets include ensuring uniform particle size, appropriate flowability, compressibility, for optimal processing and performance. Formulation Requirements for Pellets also involve maintaining drug stability, controlling moisture content, and achieving desired drug release profiles through suitable polymers and excipients. The formulation of pellets involves careful selection of ingredients to ensure proper drug release, stability, … Read more
Packing, Storage, and Stability Testing ensure drug protection by using suitable containers and environmental controls to preserve efficacy and safety. Packing, Storage, and Stability Testing help determine a product’s shelf life by assessing its physical, chemical, and microbiological stability under various conditions. Packing: Soft gelatin capsules are packed in moisture-proof containers to prevent degradation. Common … Read more
Catecholamines Biosynthesis (dopamine, norepinephrine, and epinephrine) are synthesized from tyrosine in adrenergic neurons and the adrenal medulla. Steps of Catecholamines Biosynthesis Tyrosine Transport & Hydroxylation: Tyrosine, derived from diet or synthesized from phenylalanine, is transported into neurons. Tyrosine hydroxylase (TH) converts tyrosine into L-DOPA (Rate-limiting step). Decarboxylation to Dopamine: DOPA decarboxylase converts L-DOPA into dopamine. … Read more
Sympathetic Nervous System (SNS) Definition The Sympathetic Nervous System (SNS) is a division of the autonomic nervous system responsible for the “fight or flight” response. Drugs acting on the SNS either stimulate (sympathomimetics) or inhibit (sympatholytic) its activity by targeting adrenergic receptors (α and β), affecting heart rate, blood pressure, bronchodilation, and metabolic processes. Adrenergic … Read more
Parasympathetic Nervous System (PNS) Definition The Parasympathetic Nervous System (PNS) are drugs that mimic or enhance the effects. They promote “rest and digest” functions by stimulating muscarinic and nicotinic receptors, leading to effects such as reduced heart rate, increased glandular secretions, and enhanced digestive activity. Cholinergic Agonists (Parasympathomimetics) Mimic acetylcholine, stimulating the PNS. Effects: ↓ … Read more
Neurons and Synapses Definition neurons and synapses, representing the fundamental unit of neural communication where electrical or chemical signals are transmitted from one neuron to another. It emphasizes the inseparable relationship between the nerve cell (neuron) and its connection point (synapse) in processing and transmitting information within the nervous system. Neurons Neurons are the fundamental … Read more
The nervous system is a complex network of nerves and cells, known as neurons, that transmit signals between different parts of the body. It essentially functions as the body’s electrical wiring. It is divided into two main components: Central (CNS) Peripheral (PNS) This system is fundamental to everything the body does, from sensing heat and … Read more
Pelletization is the process of converting fine powders or granules into small, free-flowing, spherical units. Pelletization Process can be achieved through various techniques: Common Pelletization Techniques: Extrusion-Spheronization: The most widely used method for producing pellets. Steps: Mixing and Wet Massing: The drug and excipients are blended, and a binder solution is added to form a … Read more
